Do you really think creating an ICO is al about the developer itself?

You may create it but you will never be able to execute the idea of it with the plan in the real world. You will have to have a team (big one) for different stages of its development. You may need advisory bodies, directors, face of your ICO that is founder and co-founder, financial bodies, legal persons, analysts and many more. These all people when come together, they can create whole ICO but more successful and legit one. In short you will need team surely and you can not make it alone, doesn't matter how hard you try it.